﻿///////////////////////////////////////////////////////////////////////////////
//
// This file is part of the BassDrop project
//   https://code.google.com/p/bass-drop/
//
//
// Creator:	Gergely Krajcsovszki (krajcsovszkig@hotmail.com)
// Date:	2014-05-02 14:35
//
//
// Copyright © 2013-2014. Gergely Krajcsovszki
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
///////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BassDrop.Core.Common.Utilities
{
	/// <summary>
	/// Contains various extension methods for strings
	/// </summary>
	public static class StringUtils
	{
		/// <summary>
		/// Returns the substring of a string until the last occurence of the passed pattern string.
		/// If the pattern cannot be found, the entire string is returned.
		/// </summary>
		/// <param name="str">the string to process</param>
		/// <param name="pattern">the pattern to look for</param>
		/// <returns>a substring of the original string up to the last occurence of the passed pattern (exclusive)</returns>
		public static string SubstringUntilLast( this string str, string pattern )
		{
			int index = str.LastIndexOf( pattern );

			if ( index >= 0 )
			{
				return str.Substring( 0, index );
			}
			else
			{
				return str;
			}
		}
	}
}
